%0 Journal Article %A Christian Miebach %A Karl Oeljeklaus %T On proper $\mathbb R$-actions on hyperbolic Stein surfaces %J Documenta mathematica %D 2009 %P 673-689 %V 14 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/285/ %R 10.4171/dm/285 %F 10_4171_dm_285